My rough translations of the photo captions, clockwise from top left are:

• On the black border; 'China'.
• -
• -
• Above the photo ; 'Manufacturer/brand unknown'

I think that slightly better labels might be:

• Dodsun (Taiwan) front derailleur - I think this is from Taiwan not China
• Charvin Le Lautaret (France)
• Outsider Route (France)
• Super-Rapid (France)

• Publisher: New Cycling
• Document: New Cycling May 1981 - '81 Derailleur Collection
• Date: May 1981
• Derailleur brands: Charvin, Outsider, Super-Rapid, Dodsun? or Unknown Chinese brand
• Derailleurs: Charvin Le Lautaret, Outsider Route, Super-Rapid